If you can I recommend you to use PHP 301 redirect it's much easier and secure cause .htaccess manipulation can lead to some serious issues if you don't know what you are doing.
301 PHP redirect:
header("Location: URL", true, 301);
in the code above with the URL of the website or web-page to where you want redirect the content.
Here is .htaccess direct code:
# Replace me with your comment
Redirect 301 /old-page.html http://www.example.com/new-page.html